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refactor: move streamable HTTP app creation from FastMCP to lowlevel Server (#1899)

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Max Isbey 2026-01-19 18:48:04 +01:00 • committed by GitHub
commit 34e66a3812
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1 changed files with 189 additions and 122 deletions
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16
src/mcp/server/streamable_http_manager.py
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@ -6,7 +6,7 @@ import contextlib
import logging
from collections.abc import AsyncIterator
from http import HTTPStatus
from typing import Any
from typing import TYPE_CHECKING, Any
from uuid import uuid4
import anyio
@ -15,7 +15,6 @@ from starlette.requests import Request
from starlette.responses import Response
from starlette.types import Receive, Scope, Send
from mcp.server.lowlevel.server import Server as MCPServer
from mcp.server.streamable_http import (
MCP_SESSION_ID_HEADER,
EventStore,
@ -24,6 +23,9 @@ from mcp.server.streamable_http import (
from mcp.server.transport_security import TransportSecuritySettings
from mcp.types import INVALID_REQUEST, ErrorData, JSONRPCError
if TYPE_CHECKING:
from mcp.server.lowlevel.server import Server as MCPServer
logger = logging.getLogger(__name__)
@ -290,3 +292,13 @@ class StreamableHTTPSessionManager:
media_type="application/json",
)
await response(scope, receive, send)
class StreamableHTTPASGIApp:
"""ASGI application for Streamable HTTP server transport."""
def __init__(self, session_manager: StreamableHTTPSessionManager):
self.session_manager = session_manager
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None: # pragma: no cover
await self.session_manager.handle_request(scope, receive, send)